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In PHP, I have an array of variables that are ALL strings. Some of the values stored are numeric strings with commas.
What I need:
A way to trim the commas from strings, and ONLY do this for numeric strings. This isn't as straightforward as it looks. The main reason is that the following fails:
$a = "1,435"; if(is_numeric($a)) $a = str_replace(',', '', $a); This fails because $a = "1435" is numeric. But $a = "1,435" is not numeric. Because some of the strings I get will be regular sentences with commas, I can't run a string replace on every string.
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To remove all commas from a string, call the replace() method, passing it a regular expression to match all commas as the first parameter and an empty string as the second parameter. The replace method will return a new string with all of the commas removed.
replace(/\,/g,''); // 1125, but a string, so convert it to number a=parseInt(a,10); Hope it helps.
Using str_ireplace() Method: The str_ireplace() method is used to remove all the special characters from the given string str by replacing these characters with the white space (” “).
Do it the other way around:
$a = "1,435"; $b = str_replace( ',', '', $a ); if( is_numeric( $b ) ) { $a = $b; } Not tested, but probably something like if(preg_match("/^[0-9,]+$/", $a)) $a = str_replace(...)
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